ELECTROANALYSIS OF PERACETIC ACID IN THE PRESENCE OF A LARGE EXCESS OF HYDROGEN PEROXIDE

Mohamed Ismail Awad Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan

Chokto Harnoode Research & Technology Development Department, Ricoh Kyosan, Inc., 7-22 Midori-cho, Kawaguchi, Saitama, 332-0027, Japan

Koichi Tokuda Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan

Takeo Ohsaka Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8502, Japan

Abstract

The simultaneous electroanalysis of peracetic acid (PAA) and H₂O₂ in the presence of a large excess of H₂O₂, up to hundred times the concentrations of PAA, has been presented for the first time. Square wave voltammetry using a gold electrode was successfully applied for this purpose. It was found that a careful electrochemical pretreatment of the gold electrode is the key for obtaining reproducible data. Good calibration curves for the reduction of both species were obtained with correlation coefficients higher than 0.996. The detection limit for PAA was found to be 45 μM.

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ACKNOWLEDGMENT

The present work was financially supported by Grant-in-aids for Scientific Research (No. 12875164) and Scientific Research (A) (No. 10305064) from the Ministry of Education, Science, Sports and Culture, Japan. M. I. A. thanks the Government of Japan for the Monbusho fellowship.

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ELECTROANALYSIS OF PERACETIC ACID IN THE PRESENCE OF A LARGE EXCESS OF HYDROGEN PEROXIDE

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ELECTROANALYSIS OF PERACETIC ACID IN THE PRESENCE OF A LARGE EXCESS OF HYDROGEN PEROXIDE

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